Onyx vs Kairo

Baby Name Comparison — 2026

Onyx

Boy #359 Most Popular 2 Syllables

"black gemstone"

Origin: Greek (onyx)

American

✓ All Clear

Boy #238 Most Popular 2 Syllables

"the victorious, the conqueror"

Origin: Arabic place name

American African American Arabic

✓ All Clear

Onyx Rank #359

Kairo Rank #238

Kairo is more popular, ranked #238 vs #359 for Onyx.

Is Onyx or Kairo more popular?

Kairo is more popular, ranked #238 compared to Onyx at #359 in the United States.

What do Onyx and Kairo mean?

Onyx means "black gemstone" (Greek (onyx) origin). Kairo means "the victorious, the conqueror" (Arabic place name origin).

Are Onyx and Kairo boy or girl names?

Onyx is primarily a boy name. Kairo is primarily a boy name.